Heder drops out of Ferrell sitcom

The Napoleon Dynamite star was signed up to play a computer geek who moves back to his small hometown to live with his parents in the untitled series, set to air on U.S. network Comedy Central.

But he's now dropped out of the project - just days before production was due to begin this week (begs29Mar10).

Heder's rep tells EW.com, "Comedy Central, Gary Sanchez Productions and Jon Heder have mutually decided to part ways over creative differences with the character. Jon wishes the show nothing but success, and is very grateful for the opportunity."